This charming 1977 Christmas issue from Christmas Island in the Indian Ocean depicts “Four Calling Birds,” inspired by the traditional carol The Twelve Days of Christmas. Illustrated in a minimalist, elegant style, four seabirds—likely noddies or terns—are shown in expressive poses against a soft blue background. The stamp captures both the festive theme and the island’s natural wildlife. Issued on 15 November 1977, it was part of a multi-year series celebrating the Christmas season through the famous carol.